What tubes does the Music Man 2475 65 2275 65 B use?

The Music Man 2475 65 2275 65 B uses 2× 12AX7 preamp tubes.

When was the Music Man 2475 65 2275 65 B produced?

The Music Man 2475 65 2275 65 B was produced 1977–1984.

Music Man 2475 65 2275 65 B preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Music Man 2475-65 and 2275-65 B variant was a revised version of the standard 65-watt combo, incorporating circuit updates that improved the overall tone and reliability. These dependable hybrids continued Music Man's tradition of clean American amplification into the early 1980s.

Years produced: 1977–1984
Made in: US
Wattage: 65W
Channels: 2
Preamp tubes: 2× 12AX7

Tags: american, vintage, clean.

Schematic-derived preset files for 16 Fractal and Line 6 modelers: Axe-Fx II/XL/XL+, Axe-Fx III, FM3, FM9, and the full Helix family (Floor, LT, Rack, HX Stomp, HX Stomp XL, Native).

Gridleak extracts amp parameters from original circuit schematics using AI vision — component values, gain staging, tone stack topology, tube types — then generates native preset files for every supported modeler. Every extraction is scored 0–100 and the score is published.